Coupling for armored hose.



' No. sqs,1s5. PATENTED DEG. 5, 1905.

- B. T. GREENFIBLD.

COUPLING-FOB, ARMO'RED HOSE. v APPLICATION FILED 0012s, 1904.

v UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Dec. 5, 1905.

Application filed October 5, 1904. Serial No. 227,314.

To all whom/it may concern.-

Be it known that I, EDWIN T. GREENFIELD, a

. citizen of the United States,residing atMonticello, in the county ofSullivan and State of New York, have made a new and useful Invention inCouplers for Armored Hose, of which the following is a specification.

My invention is directed particularly to an improvement upon a couplerfor armored hose disclosed in a prior United States Patent No. 746,497,granted to me on the- 8th day of December, 1903, and it has for itsobjects, first, to provide a coupler of the nature indicated which shalleffect a stronger union between the parts coupled than was possible withthe structural apparatus disclosed in the before-mentioned patent;second, to provide a coupler for armored hose which shall effect ametallic union between the armor of the hose and a. cylindrical metalliccoupling sleeve extending into the end thereof and in such manner thatthe armor, the sleeve, and v the intervening hose shall be firmly andsecurely bound together.

My invention will be fully understood by referring to the accompanyingdrawings, in which 1 Figure l representsalongitudinal sectionalviewtaken though the end of an armored hose and my novel form of coupleras applied thereto, one of the halves of the exterior coupling-ringbeing shown in elevational view and the bolts which unite the two halvesof the same together in section. Fig. 2 is a transverse sectional viewtaken through Fig; 1 on the line X X and as seen looking thereat fromleft to right in the direction of the arrows. Fig. 3 is an endelevational View as seen looking at'Fig. 1 from right to left upon thesupposition that the hose has been removed.

The novel form of coupler disclosed in my before-mentioned patent whilebeing effective in its operation was notfound to be as effective asdesirable when armored hose was to be coupled where extremly highpressures were to be utilizedsuch, for instance, as in connection withhydraulic mining, steamdrills, and the like-and this for'the reason thatthe coupling was effected solely through externally-applied pressurewhich reached the limit when the armor-strips had been bound firmlytogether, while in the present improvement I have combined with theexternal half coupling-rings adjustable internal means and have sounited the parts that the interior of the hose and the exterior of thearmor are firmly held in the strongest possible relation through theagency of the intervening gripping action of the parts, as will be fullyunderstood by referring to the accompanying drawings in detail and firstto Fig. 1, in which 1 represents a flexible hose, and 2 3 thespirally-arranged metal armor therearound,

said armored hose being in every essential respect the same as thatdisclosed in a prior patent granted to me on the 8th day of December,1903, and bearing No. 746,630. 4 4 represent the metallic halfcoupling-rings or exterior part of the coupler, the same beingpreferably of cast-steel screw-threaded interiorly at 6 6, with threadshaving the same relative pitch as that of .the spirally-wound armor 2 3,7 being an inwardly-projecting shoulder at one end of each of the twoparts, the inner faces of said shoulders being in. the nature of'hexagonal walls, as clearly illustrated in Fig.2. 5 5 are bolts forsecuring 10 is acy-- the half coupling-rings together. lindricalmetallic coupling-sleeve of metal, provided at one end with a shoulder11, adapted to bear against a corresponding shoulder 13 of ascrew-threaded cou'plerl2 for securing the same to the malescrew-threaded stationary end of a hydrant, water-pipe, steampipe, orthe like, to whichthe hose is to be coupled. The other end of the hollowcylindrical coupling-sleeve 10 is cone-shaped, as shown,and isscrew-threaded for a distance approximatingone-half the length thereof,8 being a hexagonal screw-threaded metallic coupling-nut adapted to besecured upon said sleeve and provided with a shoulder or ledge 9,adapted to take against the corresponding shoulders 7 of the two halfcoupling-rings 4 4, the arrangement being such that when the parts areput together the hexagonal-shaped nut fits accurately within thehexagonal walls IOO of the shoulders 7.

The parts are put together as follows: The two half coupling-rings aresecured in position about the ends of the armored hose with thescrew-threads thereof surrounding the male screw-threads or armor-strips2 3, the hexagonal nut being in position with its shoulder 9 resting,respectively, against the inner or adjacent end of the hose and theshoulders 7 in the manner shown. The bolts 5 are then secured in placeand the nuts thereon turned until the two half coupling-rings firmlygrip the hose and compress the armor securely therearound. The coupler12 is then slipped upon the cylindrical couplingsleeve and the latter isdriven forward by a pipewrench through the agency of the screw-threadsupon the sleeve and in the nut 8 until the cone-shaped end enters to thedesired extent the interior of the inclosed end of the hose, so thatexterior pressure is effected between the cone-shaped end of thecylindrical coupling-sleeve and the armor and surrounding halfcoupling-rings, as will be apparent on inspection of Fig. 1 of thedrawings, the pressure being such that when the parts are all firmlysecured together the internal diameter of the coupling-sleeve 10 andhose to be coupled is substantially identical. The coupler 12 is thensecured in position with a coupling -wrench upon the screwthreaded endof the hydrant or steam-pipe to which it is to be connected.

I do not limit my invention to the especial structural arrangementdisclosed in the accompanyingdrawings,as obviouslyanumber of thefeatures thereof might be materially departed from and still come withinthe scope of my claims hereinafter made. To illustrate, instead ofutilizing half coupling-rings this part may be cast in one integralpiece having internal screw-threads corresponding to the pitch anddimensions of the screw-threaded armor 2 3 and ashoulder7 likethatdisclosed in the drawings, and for the purpose of adapting this formof V coupler for successive sections of armored hose it is obvious thatit would only be necessary to so construct the cylindricalcoupling-sleeve 10 that when the same is rotated with a pipe-wrench itwould cause corresponding coupling-nuts 8 at its opposite ends to beadvanced toward each other, said sleeve being correspondingly coneshapedand provided with right and left screw-threads at its opposite endsHaving thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

1. Means for connecting a hose to a metallic coupler embracing ametallic couplingsleeve having a shoulder at one end adapted to bearinternally against the shoulder of the coupler and screw-threadedintermediate its ends; in combination with a screw-threaded metalliccoupling-nut and a two-part coupling-ring, both the nut and the ringbeing provided with interlocking shoulders and the latter with means forfirmly gripping the end of the hose between the end of thecouplingsleeve and the inner faces of the two-part ring.

2. Means for connecting a hose to a metallic coupler embracing ametallic couplingsleeve shouldered at one end and cone-shaped at theother and screw-threaded intermediate its ends; in combination withascrew-threaded metallic coupling-nut adapted to be secured thereon anda two-part couplingring, said nut and ring being provided withinterlocking shoulders and the latter with internal screw-threads andbolts and bolt-holes for gripping the end of an armored hose between itand the end of the cone-shaped sleeve.

3. A hose-coupler for a flexible hose provided with a screw-threadedarmor embracing half coupling-rings screw-threaded interiorly andprovided with a shoulder at one end; in combination with a couplingsleeve coneshaped at one end and screw-threaded upon its exteriorsurface; together with a nut screwthreaded interiorly to lit thescrew-threads of the coupling-sleeve and having a shoulder adapted tobear against the shoulder of the coupling-ring, said half-rings beingprovided with bolt-holes and bolts for securing them together about theend of the hose, substantially as described.

4. A hose-coupler embodying two half coupling-rings screw-threadedinterior] y and provided with bolt-holes for receiving bolts and ashoulder at one end; in combination with a cone-shaped coupling-sleevescrewthreaded at its cone-shaped end and a hexagonal screwthreaded nutprovided with a shoulder adapted to bear against the shoulder of thehalf coupling-rings, the shoulders of the latter being provided withhexagonal surfaces adapted to surround and prevent the nut from turningwhen the coupling-sleeve is rotated, substantially as described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

EDWIN T. GREEN FIELD.

Witnesses:

C. J. KINTNER, M. F. KEATING.

